Color Swatch created using heavy application/diluted application and was applied on cold press watercolor paper (150 lb) material.
This color contains the following pigments:
PY83—Diarylide Yellow 83
Pigment Type
organic, disazo
Chemical Name
n/a
Chemical Formula
C36H32Cl4N6O8
Properties
Diarylide Yellow is a semi-opaque, moderately staining, intense deep reddish yellow pigment with good tinting strength.
Permanence
Diarylide Yellow 83 has very good lightfastness and permanence. However, it can fade in tints, so some artists do not consider it suitable as an artists’ color. Many other diarylide yellow pigments are reported to have fair to poor lightfastness, and some are completely fugitive. Diarylide Yellow 83 is reputed to be one of the most permanent of the entire group.
Toxicity
Diarylide Yellow has no significant acute hazards, but chronic hazards have not been well studied.
History
Diarylide Yellow comes from a family of azo pigments called Diarylide. These yellow hued pigments were developed around 1940 and are very important in printing inks.
Alternate Names
Benzidine Yellow, Diazo Yellow.
PBr11—Magnesium Ferrite
Pigment Type
inorganic
Chemical Name
magnesium ferrite
Chemical Formula
MgFe2O4
Properties
Magnesium Ferrite an opaque reddish brown pigment with high tinting strength.
Permanence
Magnesium Ferrite has excellent lightfastness.
Toxicity
Magnesium Ferrite is mildly toxic.
History
Magnesium Ferrite occurs in natural deposits with iron oxides. It is a component of some natural earth pigments. Magnesium Ferrite is often used as a pigment in industrial coatings for corrosion protection.
Alternate Names
n/a
